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Dynamic analysis of open membrane structures interacting with air
Author(s) -
Sygulski R.
Publication year - 1994
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620371103
Subject(s) - aerodynamics , curvilinear coordinates , inviscid flow , compressibility , vibration , finite element method , boundary element method , fluid–structure interaction , boundary value problem , mechanics , discretization , boundary (topology) , engineering , physics , structural engineering , mathematics , geometry , mathematical analysis , acoustics
Vibrations of open membrane structures including interaction with air are presented in the paper. Free and forced linear harmonic vibration problems are considered in the analysis. It is assumed that the air is compressible and inviscid. The aerodynamic pressure associated with structure deformations is described by boundary integral equation. The finite element method for the structure and the boundary element method for the air are used. To discretize the surface of the structure, triangular curvilinear 6‐node elements are applied. The effects of the air compressibility and the aerodynamic radiation damping are investigated. The considerable decrease of the lowest natural frequencies in consequence of considering the effect of the surrounding air is observed. Numerical examples are given.